CN107272939A - Device and method for integrating touch control and pressure sensing - Google Patents
Device and method for integrating touch control and pressure sensing Download PDFInfo
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- CN107272939A CN107272939A CN201710202787.3A CN201710202787A CN107272939A CN 107272939 A CN107272939 A CN 107272939A CN 201710202787 A CN201710202787 A CN 201710202787A CN 107272939 A CN107272939 A CN 107272939A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
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- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Electronic Switches (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A device integrating touch control and pressure sensing comprises a touch control electrode layer, a pressure sensor layer and a pressure sensing layer, wherein the touch control electrode layer comprises a plurality of first touch control electrodes arranged along a first direction and a plurality of second touch control electrodes arranged along a second direction; a protective layer; a pressure electrode layer including at least one pressure sensing electrode; a layer of flexible dielectric material; and a capacitance detection module; during touch detection operation, the capacitance detection module sequentially or randomly applies a touch emission signal to a plurality of selected second touch electrodes and sequentially or randomly inputs a touch induction signal from a plurality of selected first touch electrodes; during the pressure detection operation, the capacitance detection module applies a pressure capacitance sensing excitation signal to the at least one pressure sensing electrode and inputs a pressure sensing signal from the pressure sensing electrode; through the technical scheme, the anti-interference performance of the sensing device can be effectively improved, the device can realize a good sensing effect without generating more physical quantity changes, and the cost of the sensing device is effectively reduced.
Description
Technical field
The invention relates to a kind of sensing device further, particularly a kind of device for integrating touch-control and pressure-sensing.
Background technology
Compact mobile device drives the trend of touch-control display panel, and because the human machine interface technologies of touch-control are ripe
The operational requirements of 3D touch-controls are constantly lifted with user, the technology of pressure touch is also weeded out the old and bring forth the new therewith；The pressure of prior art
Micro electronmechanical pressure sensor is often placed in the edge or corner of display panel by power touch-control display panel, to sense panel surface
Touching pressure, not only sensor is with high costs and not easy to attach；Also have and make trickle deformable with complicated production process
Elastic micro-structural, increases the correlation of pressure and deflection, thus produces more physical quantity and changes to detect；Therefore pressure
Sensing contact panel still has improved space.
The content of the invention
To improve the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of touch-control and pressure-sensing integrated
Device.
To reach the above-mentioned purpose of the present invention, the present invention provides a kind of device for integrating touch-control and pressure-sensing, comprising：One
Touch control electrode layer, includes several the first touch control electrodes set in the first direction and several the second touch-controls set in a second direction
Electrode, wherein, the first direction is vertical with the second direction；One protective layer, is arranged at the side of the touch control electrode layer；One pressure
Electrode layer, includes at least one pressure-sensing electrode；One elastomeric dielectric material layer, positioned at the touch control electrode layer and the pressure electrode
Between layer；And an electric capacity detecting module, when touch detection is operated, electric capacity detecting module is sequentially or random launch a touch-control believes
Number put on several selected second touch control electrodes, and random touch sequentially or from several selected the first touch control electrodes inputs one
Control induced signal；When pressure detection is operated, a pressure capacitance excitation induced signal is put on this extremely by the electric capacity detecting module
A few pressure-sensing electrode simultaneously inputs a pressure sensitive signal from the pressure-sensing electrode.
As a further improvement on the present invention, the protective layer be a glass substrate, the film substrate of a high polymer material or
It is the coating layer of a hard.
As the further improvement of the present invention, the electric capacity detecting module sequentially or is at random incited somebody to action again when pressure detection is operated
Pumping signal is answered for a pair to put at least one selected first touch control electrode and/or at least one selected second touch-control electricity
Pole.
As the further improvement of the present invention, the electric capacity detecting module is when touch detection is operated again by a reference potential
Put on the pressure-sensing electrode of at least one.
As the further improvement of the present invention, the electric capacity detecting module includes a mutual capacitance circuit for detecting and a self-capacitance
Circuit for detecting, the position of touch point is detected in touch control operation with mutual capacitance circuit for detecting, when pressure detection is operated with electricity certainly
Hold the self-capacitance change of circuit for detecting detecting pressure electrode.
As the further improvement of the present invention, elastomeric dielectric material layer includes an elastic colloidal material, the elastic gum
Volume compression is deformed when material meets pressure, and recovers original volume and shape when removing pressure.
As the further improvement of the present invention, the electric capacity detecting module is when pressure detection is operated also by pressure electricity
Hold excitation induced signal same-phase signal put on those first non-selected touch control electrodes and/or those non-selected second
Touch control electrode.
As the further improvement of the present invention, the pressure capacitance excitation induced signal is an alternating signal.
As the further improvement of the present invention, the correspondence pumping signal is that a DC reference signal or one are electric with the pressure
Hold the alternating signal of excitation induced signal inversion position.
As the further improvement of the present invention, the DC reference signal is a zero potential signal.
As the further improvement of the present invention, it includes a substrate again, be arranged at the elastomeric dielectric material layer back to this
The side of protective layer, it is a glass substrate or a high polymer material substrate.
As the further improvement of the present invention, the substrate is the colored optical filtering substrates of a display screen, the pressure electrode
Layer is the electrostatic shielding protective layer of display screen.
To improve the shortcoming of above-mentioned prior art, a further object of the present invention is to provide a kind of touch-control sensing of integrating with pressing
The method of power sensing.
To reach the above-mentioned further object of the present invention, the present invention provides a kind of side for integrating touch-control sensing and pressure-sensing
The device of method, its device comprising the integration touch-control of offer one and pressure-sensing, the integration touch-control and pressure-sensing is included：One touch-control
Electrode layer, includes several the first touch control electrodes set in the first direction and several the second touch-control electricity set in a second direction
Pole, wherein, first direction is vertical with second direction；One protective layer, is arranged at the side of the touch control electrode layer；One pressure electrode
Layer, includes at least one pressure-sensing electrode；One elastomeric dielectric material layer, positioned at the touch control electrode layer and the pressure electrode layer
Between；One electric capacity detecting module；One touch detection sequential, sequentially or random puts on selected this second by a touch-control transmission signal
Touch control electrode, and a touch-control sensing signal sequentially or at random is inputted from selected first touch control electrode, make touch detection operation,
One reference potential is also put on the pressure-sensing electrode of at least one by it when touch detection is operated；And during a pressure detection
Sequence, at least one pressure-sensing electrode is put in the pressure detection sequential by a pressure capacitance excitation induced signal, and
A pressure sensitive signal, which is inputted, from the pressure-sensing electrode makees pressure detection.
As a further improvement on the present invention, judge whether to detect touching at the end of the touch-control sequential, if detecting
Touching, then into pressure detection sequential.
As the further improvement of the present invention, judge whether to detect touching in the touch-control sequential, if detecting tactile
Touch, then a touch mark is set and the coordinate of the touch points is recorded, the touch mark is removed or reset if touching is not detected.
As the further improvement of the present invention, when the setting according to touch mark decides whether to perform the pressure detection
Sequence.
As the further improvement of the present invention, the pressure capacitance excitation induced signal is an alternating signal.
As the further improvement of the present invention, a reference potential is put on this at least again in the touch detection sequential
One pressure-sensing electrode.
As the further improvement of the present invention, will be answered for a pair again in the pressure detection sequential pumping signal put on to
Few a first selected touch control electrode and/or at least one selected second touch control electrode.
As the further improvement of the present invention, the correspondence pumping signal is a DC reference voltage or the pressure capacitance sense
Answer the inversion signal of pumping signal.
As the further improvement of the present invention, the DC reference voltage is the ground signalling of a zero potential.
As the further improvement of the present invention, in the pressure detection sequential also by the pressure capacitance excitation induced signal
Same-phase signal put on those first non-selected touch control electrodes and those non-selected second touch control electrodes.
As the further improvement of the present invention, the electric capacity detecting module includes an at least self-capacitance circuit for detecting.
The beneficial effect of technical solution of the present invention is：The integration touch-control of the present invention and the device of pressure-sensing can be effectively improved
The anti-interference of touch-control and pressure-sensing, and more physical quantity need not be produced change and just can realize good sensing effect, and have
Effect reduces the cost of sensing device further.
Brief description of the drawings
Fig. 1 integrates the schematic diagram of the first embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 2 integrates the schematic diagram of the second embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 3 integrates the schematic diagram of the 3rd embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 4 integrates the schematic diagram of the fourth embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 5 integrates the schematic diagram of the 5th embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 6 integrates the schematic diagram of the sixth embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 7 integrates the schematic diagram of the 7th embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 8 integrates the schematic diagram of the 8th embodiment regarded on the device of touch-control and pressure-sensing for the present invention.
Fig. 9 integrates the schematic diagram of the first embodiment of the device lamination of touch-control and pressure-sensing for the present invention.
Figure 10 integrates the schematic diagram of the second embodiment of the device lamination of touch-control and pressure-sensing for the present invention.
Figure 11 integrates the schematic diagram of the 3rd embodiment of the device lamination of touch-control and pressure-sensing for the present invention.
Figure 12 integrates the schematic diagram of the fourth embodiment of the device lamination of touch-control and pressure-sensing for the present invention.
Figure 13 integrates the schematic diagram of the device first embodiment of touch-control and pressure-sensing for the present invention.
Figure 14 integrates the schematic diagram of the device second embodiment of touch-control and pressure-sensing for the present invention.
Figure 15 integrates the schematic diagram of the device 3rd embodiment of touch-control and pressure-sensing for the present invention.
Figure 16 integrates the schematic diagram of the device fourth embodiment of touch-control and pressure-sensing for the present invention.
Figure 17 integrates the schematic diagram of the embodiment of device the 5th of touch-control and pressure-sensing for the present invention.
Figure 18 integrates the schematic diagram of the device sixth embodiment of touch-control and pressure-sensing for the present invention.
Figure 19 integrates the schematic diagram of the embodiment of device the 7th of touch-control and pressure-sensing for the present invention.
Figure 20 is the schematic diagram of an instantiation of self-capacitance circuit for detecting in the present invention.
Figure 21 integrates the flow chart of an embodiment of the method for touch-control sensing and pressure-sensing for the present invention.
Symbol is represented in figure：
10 integrate the device of touch-control and pressure-sensing；50 electric capacity detecting modules；50' self-capacitance circuit for detecting；52 electric capacity swash
Encourage drive circuit；53 DC reference signal sources；54 electric capacity reading circuits；56 in-phase amplifiers；59 inverting amplifiers；60
Induction electrode；62 first stray capacitances；64 second stray capacitances；70 mutual capacitance circuit for detecting；100 protective layers；100a
One surface；100b second surfaces；The touch control electrodes of 110, XE1 ~ XE53 first；114 jumpers；116 wiring；120,Yn1~
Yn5, Yen, YE1 ~ YE35 second touch control electrodes；122,112 conductor bridges；130 insulating barriers；150 touch control electrode layers；200
Elastomeric dielectric material layer；300 pressure electrodes layer；310,310a, 310b pressure-sensing electrode；400 substrates；520 signal sources；
522 drivers；The impedances of 522a second；The impedances of 522b the 3rd；540 differential amplifiers；540a first input ends, 540b
Two inputs；540c output ends；542 first impedances；544 first electric capacity；600 microprocessors；T touch points；Vref is straight
Flow reference voltage；VRX touch-control sensing signals；VTX touch-control transmission signals；Vc pressure sensitive signals；Vp pressure capacitances sense
Pumping signal；Vp1 mask signals；Vo correspondence pumping signals；S10, S20, S30 step.
Embodiment
Detailed description for the present invention and technology contents, are described as follows, accompanying drawing refering to following detailed description and accompanying drawings
With describing in detail as illustrative purposes only, the scope of the present invention is not intended to limit.
It is the schematic diagram of an instantiation of the lamination of device 10 that the present invention integrates touch-control and pressure-sensing with reference to Fig. 9.Should
The device 10 for integrating touch-control and pressure-sensing includes a protective layer 100 from top to bottom, an elastomeric dielectric material 200, one base of layer
Plate 400 and one pressure electrode layer 300, the wherein protective layer 100 have a first surface 100a, a second surface 100b and the
Touch control electrode layer 150 on two surface 100b.The touch control electrode layer 150 includes several the first touch-control electricity set in the first direction
Pole 110 (such as the first touch control electrode XE1 ~ XE8 shown in this figure), several second touch control electrodes 120 set in a second direction
And an insulating barrier 130, but shown in this figure be only a side view lamination schematic diagram, thus the quantity of the first touch control electrode 110 and point
Mode for cloth not limited to this.Those first touch control electrodes 110 are arranged on the second surface 100b of the protective layer 100, and those
Two touch control electrodes 120 are arranged at the insulating barrier 130 back to the side of the protective layer 100, i.e., set compared to the insulating barrier 130 and
Further from protective layer 100.Those first touch control electrodes 110 and those second touch control electrodes 120 by the insulating barrier 130 it is sandwiched its
Between, and those first touch control electrodes 110 by the insulating barrier 130 with the other parts of device 10 for integrating touch-control and pressure-sensing
（Such as electric capacity detecting module 50, is referred to aftermentioned）Electrical connection.Pressure electrode layer 300 is arranged at the touch control electrode layer 150 and carried on the back
To the side of the protective layer 100；And the substrate 400 be arranged at the elastomeric dielectric material layer 200 with the pressure electrode layer 300 it
Between.It is the schematic diagram of the second instantiation of the lamination of device 10 that the present invention integrates touch-control and pressure-sensing with reference to Figure 10.This is whole
Conjunction touch-control is similar with shown in Fig. 9 with the device 10 of pressure-sensing, but the position of pressure electrode layer 300 and the substrate 400 is handed over
Change, i.e., pressure electrode layer 300 is arranged between the substrate 400 and elastomeric dielectric material layer 200；In this embodiment, should
Substrate 400 can be the colored optical filtering substrates of a display screen, and pressure electrode layer 300 is the electrostatic shielding guarantor of display panel
Sheath.
It is the signal that the present invention integrates the first embodiment regarded on the device 10 of touch-control and pressure-sensing with reference to Fig. 1 is referred to
Figure；It mainly shows the protective layer 100, those first touch control electrodes 110, those second touch control electrodes 120 and the pressure electrode
The distribution situation that layer 300 is regarded on；But this icon is not intended to limit the size relationship of those components, but in order to more clear
Chu shows the planar configuration of those components and specially it is offset one from another and be more easy to explanation.In addition, the integration touch-control and feeling of stress
The device 10 of survey can also include an electric capacity detecting module 50, and the electric capacity detecting module 50 includes a mutual capacitance circuit for detecting 70 and one
Self-capacitance circuit for detecting 50'.Pressure electrode layer 300 also includes at least one pressure-sensing electrode 310（It is two as shown in this figure
Individual pressure-sensing electrode 310a, 310b）.In the present embodiment, those first touch control electrodes 110 (XE1 ~ XE6 as shown in the figure) are
Set in the first direction, and the quantity and distribution mode not limited to this of the first touch control electrode 110；Secondly, those second touch-controls electricity
Pole 120 (YE1 ~ YE4 as shown in the figure) is sets in a second direction, and the quantity and distribution mode of second touch control electrode 120 are not limited
In this, wherein the first direction is vertical with the second direction or slightly vertical.
Figure 13 illustrates the schematic diagram of the integration touch-control of the present invention and the device 10 of pressure-sensing in touch control operation；So scheme institute
Show, mutual capacitance circuit for detecting 70 is electrically connected respectively to the first touch control electrode 110, second touch control electrode 120 and pressure electrode layer
300；And self-capacitance circuit for detecting 50 ' is also electrically connected respectively to the first touch control electrode 110, second touch control electrode 120 and pressure electricity
Pole layer 300.With reference to Fig. 1 is referred to, the first touch control electrode 110 is sensing electrode, whether has finger touch thereon to detect；And the
Two touch control electrodes 120 are driving electrodes.The mutual capacitance circuit for detecting 70 first select one or more second touch control electrodes 120 and one or
Multiple first touch control electrodes 110 make touch detection.Below with multiple selected second touch control electrodes 120 and multiple selected first
Touch control electrode 110 is as explanation, it should be understood that idea of the invention can also be applied to select single second touch control electrode 120
And the situation of single first touch control electrode 110.This mutual capacitance circuit for detecting 70 is sequentially or random by touch-control transmission signal VTX hairs
Those selected second touch control electrodes 120 are sent to, and sequentially or are at random received in those first selected touch control electrodes 110
Touch-control sensing signal VRX；By detecting touch-control sensing signal VRX, you can know the first touch control electrode 110 of correspondence and the second touch-control electricity
Whether there is touch control operation on the crossover location of pole 120, as shown in figure 1, as application touch-control transmission signal VTX to second touch control electrode
YE2 simultaneously from the first touch control electrode XE4 receive a touch-control sensing signal VRX, just can detect learn the infall touch point T whether
There is touching.
Figure 14 illustrates that the integrate touch-control and the device of pressure-sensing of the present invention is used for the operating conditions of pressure-sensing；In pressure
During sensing, self-capacitance circuit for detecting 50' applies a pressure capacitance excitation induced signal Vp to the feeling of stress for corresponding to touch point T
Survey electrode 310, such as the pressure-sensing electrode 310b shown in Fig. 1.It is so-called herein to correspond to what is observed by overhead projection, should
Touch point T and pressure-sensing electrode 310b has lap.In addition, this self-capacitance circuit for detecting 50' is via an anti-phase amplification
This pressure capacitance excitation induced signal Vp is done anti-phase amplification to produce correspondence pumping signal Vo, and this correspondence excitation is believed by device 59
Number Vo is supplied to correspondence touch point T the first touch control electrode（Such as the first touch control electrode XE4, it is alternatively foregoing selected the
One of one touch control electrode, such as when pressure-sensing and touch-control are independent process event, can set corresponding to selected first touch-control
The pressure detection of the pressure-sensing electrode of electrode）.By applying correspondence pumping signal Vo, relative pressure-sensing electrode can be strengthened
310b pressure-sensing sensitivity.It is, having carried out after touch-control sensing, you can determine one or multiple receive touch control operation
Position, and corresponding one or multiple first touch control electrodes 110；, can be electric by pressure in the follow-up pressure-sensing stage
While appearance excitation induced signal Vp delivers to pressure-sensing electrode 310, correspondence pumping signal Vo sequentially or is at random delivered into choosing
The first fixed touch control electrode 110（Receive the first touch control electrode of touch control operation, or the first separately selected touch control electrode）.
In addition, this self-capacitance circuit for detecting 50' is via an in-phase amplifier 56（Yield value is preferably one）The sensing of this pressure capacitance is swashed
Encourage signal Vp to do with mutually amplification to produce mask signal Vp1, and this mask signal Vp1 is applied to non-selected the first touch-control electricity
Pole XE1 ~ XE3, XE5 ~ XE8（Or the touch control electrode of at least part first near the first selected touch control electrode XE4）, to cover
Interference from finger.In addition, being applied to the signal or a DC reference voltage of the first non-selected touch control electrode 110
Vref（A such as zero potential voltage）Or it is not connected to voltage (NC).
Figure 15 illustrates the schematic diagram of the 3rd embodiment of the device 10 for integrating touch-control and pressure-sensing of the present invention, and this is whole
Closing the device 10 of touch-control and pressure-sensing is used for the operating conditions of pressure-sensing.This integrates the class of device 10 of touch-control and pressure-sensing
Like Figure 14 embodiments.Similarly, the integration touch-control of this embodiment and the device 10 of pressure-sensing are produced by inverting amplifier 59
The anti-phase alternating signal with pressure capacitance excitation induced signal Vp, to be used as correspondence pumping signal Vo；Also relative pressure can be strengthened
The pressure-sensing sensitivity of power sensing electrode.In addition, being used to produce mask signal in the self-capacitance circuit for detecting 50' of this embodiment
The Vp1 input of in-phase amplifier 56 is the input point for being not connected to electric capacity reading circuit 54（It for example may be coupled directly to signal source
520）, with the influence for the pressure sensitive signal Vc for avoiding coming the input point P of self-capacitance reading circuit 54.
Figure 16 illustrates the schematic diagram of the fourth embodiment of the device 10 for integrating touch-control and pressure-sensing of the present invention, and this is whole
The device 10 of conjunction touch-control and pressure-sensing is the operating conditions for pressure-sensing.This embodiment is substantially similar with shown in Figure 15.
But this self-capacitance circuit for detecting 50' be with a DC reference signal source 53 with replace inverting amplifier 59 and will from direct current ginseng
A DC reference signal of signal source 53 is examined as correspondence pumping signal Vo.
Figure 17 illustrates the schematic diagram of the 5th embodiment of the device 10 for integrating touch-control and pressure-sensing of the present invention, and this is whole
The device 10 of conjunction touch-control and pressure-sensing is the operating conditions for touch-control sensing.This integrates the device 10 of touch-control and pressure-sensing
Similar Figure 13 embodiments, but sequentially or random touch-control transmission signal VTX is sent to those in the capacitance detection circuit 70
Selected second touch control electrode 120 and sequentially or at random receive the touch-control sensing in those first selected touch control electrodes 110
When signal VRX, while a direct current reference voltage Vref is put on into the pressure-sensing electrode 310 of at least one, to reduce
The influence of elastomeric dielectric material 200 warpage of layer or deformation for touch-control sensing is completely eliminated.
Figure 18 illustrates the schematic diagram of the sixth embodiment of the device 10 for integrating touch-control and pressure-sensing of the present invention, and this is whole
The device 10 of conjunction touch-control and pressure-sensing is the operating conditions for pressure-sensing.This embodiment is similar to Figure 17 embodiment,
And Figure 14 embodiment is combined, self-capacitance circuit for detecting 50' applies a pressure capacitance excitation induced signal Vp to corresponding to choosing
The pressure-sensing electrode 310 of the first fixed touch control electrode 110；Sequentially or random correspondence pumping signal Vo is delivered to selected the
One touch control electrode 110（Such as the first touch control electrode XE4）, correspondence pumping signal Vo also can simultaneously or separately sequentially or at random
Apply to selected second touch control electrode 120 (such as second touch control electrode YE2)；And be applied to mask signal Vp1 non-selected
The first touch control electrode XE1 ~ XE3, XE5 ~ XE8（Or the touch-control of at least part first near the first selected touch control electrode XE4
Electrode）And/or non-selected second touch control electrode 120 (such as second touch control electrode YE1, YE3, YE4), come from finger to cover
Interference.
Figure 19 illustrates that the present invention integrates the schematic diagram of the 7th embodiment of the device 10 of touch-control and pressure-sensing, and this is integrated
The device 10 of touch-control and pressure-sensing is the operating conditions for pressure-sensing.This integrates the class of device 10 of touch-control and pressure-sensing
Like Figure 18 embodiments, when carrying out pressure-sensing, self-capacitance circuit for detecting 50 ' applies a direct current reference voltage Vref to non-selected
The first touch control electrode XE1 ~ XE3, XE5 ~ XE8, and/or non-selected (such as second touch control electrode of second touch control electrode 120
YE1, YE3, YE4), to cover the interference from finger, wherein DC reference voltage Vref can be a zero potential voltage.
It is the signal of the 3rd instantiation of the lamination of device 10 that the present invention integrates touch-control and pressure-sensing with reference to Figure 11
Figure.This integration touch-control is similar with shown in Fig. 9 with the device 10 of pressure-sensing, but in the touch control electrode layer 150, those first
Touch control electrode 110 is disposed on same surface with those second touch control electrodes 120.Figure 12 integrates touch-control and feeling of stress for the present invention
The schematic diagram of 4th instantiation of the lamination of device 10 of survey.This integrates the device 10 and class shown in Figure 11 of touch-control and pressure-sensing
Seemingly, but pressure electrode layer 300 and the position of substrate 400 are exchanged；The substrate 400 can be a display screen in this embodiment
Colored optical filtering substrates, and pressure electrode layer 300 be a display screen electrostatic shielding protective layer.It is that the present invention is whole with reference to Fig. 2
The schematic diagram of the second embodiment regarded on the device 10 for closing touch-control and pressure-sensing, and correspond to Figure 11 and Figure 12 implementation
Example.In the device 10 for integrating touch-control and pressure-sensing shown in Fig. 2, the first touch control electrode 110 is sets in the first direction, i.e.,
As depicted first to fifth line（TX1~TX5）First touch control electrode XE11 ~ XE13, XE21 ~ XE23, XE31 ~ XE33, XE41
~ XE43, XE51 ~ XE53, and colleague those first touch control electrodes 110 interconnected two-by-two with a conductor bridge 112.Second touches
Control electrode 120 is sets in a second direction, i.e., the first to the 3rd row as depicted（RX1~RX3）Second touch control electrode YE11 ~
YE15, YE21 ~ YE25, YE31 ~ YE35, and those second touch control electrodes 120 of same column are mutually connected two-by-two with a conductor bridge 122
Connect.In addition, conductor bridge 112 and conductor bridge 122 have insulating barrier（It is not shown）Isolation is to avoid short circuit, and the conductor bridge is gold
Category or ITO (indium tin oxide).
Fig. 3 display present invention integrates the schematic diagram of the 3rd embodiment regarded on the device 10 of touch-control and pressure-sensing, and phase
Corresponding to Figure 11 and Figure 12 embodiment.In the device 10 for integrating touch-control and pressure-sensing shown in Fig. 3, the first touch control electrode
110 is set in the first direction, with formed six the first touch control electrode of row XE11 ~ XE15, XE21 ~ XE25, XE31 ~ XE35, XE41 ~
XE45, XE51 ~ XE55, XE61 ~ XE65, and those first touch control electrodes 110 of colleague are mutually connected two-by-two with a jumper 114
Connect.Secondly, the quantity and distribution mode not limited to this of the first touch control electrode 110, second touch control electrode 120 are to set in a second direction
Put, i.e., YE1 ~ YE4 as depicted is expressed as the second touch control electrode 120 set in a second direction, and the second touch-control electricity
The quantity and distribution mode not limited to this of pole 120.In addition the first touch control electrode 110 and second touch control electrode 120 are for setting up in same
One plane, and the first direction is vertical with the second direction or slightly vertical.The jumper 114 and second of first touch control electrode 110
There is insulating barrier between touch control electrode 120（It is not shown）, to prevent between the first touch control electrode 110 and second touch control electrode 120
Short circuit.
Fig. 4 integrates the schematic diagram of the fourth embodiment regarded on the device 10 of touch-control and pressure-sensing for the present invention, and relatively
Should be in Figure 11 and Figure 12 embodiment.In the present embodiment, those first touch control electrodes 110 is set in the first direction, with shape
Six the first touch-controls of row into XE11 ~ XE15, XE21 ~ XE25, XE31 ~ XE35, XE41 ~ XE45, XE51 ~ XE55, XE61 ~ XE65 are electric
Pole 110.Secondly, those second touch control electrodes 120 are the four row second touch control electrode YE1 ~ YE4 set in a second direction.Herein
In embodiment, the wiring 116 of the first touch control electrode 110 and second touch control electrode 120 is connected to electric capacity detecting module 50, and
The inside of electric capacity detecting module 50 carries out coiling and switch, to handle the letter of the first touch control electrode 110 and second touch control electrode 120
Number.The advantage of this embodiment be the first touch control electrode 110 with second touch control electrode 120 can copline, and can save in Fig. 2,3 institutes
Show the bridge structure and insulating barrier of example.
In addition, for the device 10 for integrating touch-control and pressure-sensing shown in Figure 11,12, Fig. 2-4, its signal operation mode
Also instantiation it can be completed as shown in Figure 13-Figure 19.
Fig. 5 integrates the schematic diagram of the 5th embodiment regarded on the device 10 of touch-control and pressure-sensing for the present invention, this integration
Touch-control is similar with shown in Fig. 1 with the device 10 of pressure-sensing, but the electric capacity of the device 10 of the integration touch-control and pressure-sensing
Detecting module 50 can save mutual capacitance circuit for detecting 70；This electric capacity detecting module 50 is sequentially or random encourage a touch control capacitance is believed
A first selected touch control electrode 110 number is put on, and touch-control sensing letter is inputted from the first selected touch control electrode 110
Number, then sequentially or it is random a touch control capacitance pumping signal is put on into a selected second touch control electrode 120, it is and selected from this
Second touch control electrode 120 inputs a touch-control sensing signal, and by the change of the grade touch-control sensing signal, judges which touch points are located at
One the first touch control electrode 110 and the intersection of which second touch control electrode 120, thus implement touch control operation, touch-control electricity
It is an alternating signal to hold pumping signal, and the alternating signal can be string ripple, square wave, triangular wave or trapezoidal wave signal.
Fig. 6 integrates the schematic diagram of the sixth embodiment regarded on the device 10 of touch-control and pressure-sensing for the present invention, this integration
Touch-control is similar with shown in Fig. 2 with the device 10 of pressure-sensing, but the electric capacity of the device 10 of the integration touch-control and pressure-sensing
Detecting module 50 can save mutual capacitance circuit for detecting 70；The same Fig. 5 of its touch operation method, therefore repeat no more.
Fig. 7 integrates the schematic diagram of the 7th embodiment regarded on the device 10 of touch-control and pressure-sensing for the present invention, this integration
Touch-control is similar with shown in Fig. 3 with the device 10 of pressure-sensing, but the electric capacity of the device 10 of the integration touch-control and pressure-sensing
Detecting module 50 can save mutual capacitance circuit for detecting 70；Its touch operation method also same Fig. 5, therefore repeat no more.
Fig. 8 integrates the schematic diagram of the 8th embodiment regarded on the device 10 of touch-control and pressure-sensing for the present invention, this integration
Touch-control is similar with shown in Fig. 4 with the device 10 of pressure-sensing, but the electric capacity of the device 10 of the integration touch-control and pressure-sensing
Detecting module 50 can save mutual capacitance circuit for detecting 70；Its touch operation method also same Fig. 5, therefore repeat no more.
In addition, for the device 10 for integrating touch-control and pressure-sensing shown in Fig. 5-8, its pressure detection mode of operation is also such as
Fig. 1-4, are repeated no more.
With reference to Figure 20, it is the schematic diagram of the instantiation of self-capacitance circuit for detecting one of the present invention.Self-capacitance detecting electricity
The electric capacity reading circuit 54 of drive circuit 52 and one is encouraged in road 50 ' comprising an electric capacity, to detect the capacitance variations that electric capacity reads point P
Value.Electric capacity excitation drive circuit 52 includes a signal source 520, a driver 522（Include the second impedance 522a and the 3rd impedance
522b）.The electric capacity reading circuit 54 includes a differential amplifier 540, one first impedance 542 and one first electric capacity 544, to detect
Capacitance variations on one induction electrode 60, this induction electrode 60 has subsidiary the first stray capacitance 62 and one second stray capacitance
64。
The signal source 520 is electrically connected to first impedance 542 and second impedance 522a；First impedance 542 is electrical
It is connected to first electric capacity 544；First electric capacity 544 is electrically connected to the first input end 540a of the differential amplifier 540；
Second impedance 522a is electrically connected to second input 540b of the differential amplifier 540；The induction electrode 60 is via this
One contact of self-capacitance circuit for detecting 50 ' and second input for being connected to the second impedance 522a and the differential amplifier 540
Hold 540b；First stray capacitance 62 is electrically connected to the pin；Second stray capacitance 64 is electrically connected to the induction electrode
60。
In the self-capacitance circuit for detecting 50 ' shown in Figure 20, the induction electrode 60 is finger sensing or all kinds of conductors or right
The touching of elephant and receive a touching signals；The signal source 520 be a periodic input signal to the 3rd impedance 522b, and should
The impedance value of first impedance 542 is equal to second impedance 522a impedance value；The differential amplifier 540 is according to the input signal
And the touching signals cause output end 540c to export the touching signals after differential amplification, the capacitance of first electric capacity 544
Equal to first stray capacitance 62 and second stray capacitance 64 capacitance in parallel, when finger or all kinds of conductors or object are close
During the induction electrode 60, the capacitance of second stray capacitance 64 can change to cause first input end 540a and this is second defeated
Enter to hold 540b magnitude of voltage different, after the differential amplification of differential amplifier 540, after output end 540c output amplifications
The touching signals, by measuring the exporting change of the differential amplifier 540, to differentiate the micro electricity produced by the induction electrode 60
Capacitance changes, and can effectively exclude the interference caused by the noises such as circuit, power supply, and measure micro capacitance change.In addition,
The more full details of this self-capacitance circuit for detecting 50 ' can be found in the micro resistances of invention ZL2012 1 0016333.4 of same applicant
Self-capacitance circuit for detecting technology disclosed in anti-change detecting device.
It is the method for integrating touch-control sensing and pressure-sensing of one embodiment of the invention with reference to Figure 21, it includes step
The device 10 of the device 10 of the integration touch-control of S10 offers one and pressure-sensing, the integration touch-control and pressure-sensing is included：One protective layer
100, the wherein touch-control of the protective layer 100 with a first surface 100a, a second surface 100b and on the second face 100b
Electrode layer 150.The touch control electrode layer 150 includes several the first touch control electrodes 110 set in the first direction, several along second party
To the insulating barrier 130 of second touch control electrode 120 and one of setting；One pressure electrode layer 300, it includes at least one pressure-sensing
Electrode 310；One elastomeric dielectric material layer 200, is arranged between the touch control electrode layer 150 and pressure electrode layer 300, the elasticity
Volume compression is deformed when dielectric materials layer 200 meets pressure, and recovers original volume and shape when removing pressure；One electric capacity is detectd
Survey module 50（Including at least the self-capacitance circuit for detecting 50 ' shown in Figure 20）；And a microprocessor 600；Step S20 carries out one and touched
Control detecting sequential, in the touch detection sequential, sequentially or random is sent to multiple selected second by touch-control transmission signal VTX
Touch control electrode 120（Or a touch-control transmission signal VTX is sent to a selected second touch control electrode 120）, and sequentially or
It is to receive the touch-control sensing signal VRX in multiple the first selected touch control electrodes 110 at random（Or receiving one selected first touches
Control the touch-control sensing signal VRX on electrode 110）, to detect whether have touch control operation and opposite position；Step S30 is carried out
One pressure detection sequential, at least one pressure is put in the pressure detection sequential by a pressure capacitance excitation induced signal Vp
Power sensing electrode 310, and make pressure detection from the pressure-sensing electrode 310 one pressure sensitive signal of input.In addition, foregoing
After the touch detection sequential that step S20 is carried out terminates, it can judge whether to detect touching at random, if detecting touching, this is micro-
Processor 600 sets a touch mark and records the coordinate of the touch points (such as in the interior setting touch mark of microprocessor 600
And record the coordinate of the touch points), the touch mark is removed or reset if touching is not detected, the setting according to touch mark
Decide whether to perform the pressure detection sequential.
, again can be randomly by a reference potential in above-mentioned touch detection sequential S20（Such as DC reference voltage）Apply
In at least one pressure-sensing electrode 310.Pumping signal Vo is answered to apply in pressure detection sequential step S30, and by a pair
In at least one the first selected touch control electrode 110 and/or at least one selected second touch control electrode 120；The correspondence pumping signal
Vo is a direct current reference voltage Vref（Such as ground signalling of a zero potential）Or pressure capacitance excitation induced signal Vp's is anti-
Phase signals.Pressure capacitance excitation induced signal Vp same-phase signal can also be applied in pressure detection sequential step S30
It is added on those non-selected the first touch control electrodes 110 and/or those non-selected second touch control electrodes 120.
In addition, in the various embodiments described above and detecting sequential, the protective layer 100 is a glass substrate, a high polymer material
Film substrate or a hard coating layer, to protect touch control electrode layer from scraping, touching and the damage of aqueous vapor；Should
Pressure capacitance excitation induced signal Vp is an alternating signal, such as a string ripple, square wave, triangular wave or trapezoidal wave；The pressure capacitance sense
Answer pumping signal Vp or a current source；Elastomeric dielectric material layer 200 includes an elastic colloidal material, the elastic gum material
Volume compression is deformed when material meets pressure, and recovers original volume and shape when removing pressure, elastomeric dielectric material layer 200
Can be（But it is not limited to）Dimethyl silicone polymer（Polydimethylsiloxane, PDMS）Material or an optical cement；The base
Plate 400 is a glass substrate or a high polymer material substrate；DC reference voltage Vref can be the ground signalling of a zero potential；
The electric capacity detecting module 50 includes an at least self-capacitance circuit for detecting 50'.
Presently preferred embodiments of the present invention is the foregoing is only, but the protection domain that the present invention is implemented, all foundations can not be limited
Equivalent changes and modifications that the present patent application scope of patent protection is made etc., should all still fall within the patent covering scope meaning of the present invention
Scheme the category of protection.The present invention can also have other various embodiments, in the situation without departing substantially from present inventive concept objective and its essence
Under, those skilled in the art can make various corresponding changes and deformation, but these corresponding changes according to the present invention
It should all belong to the protection domain of appended claims of the invention with deformation.
Claims (23)
1. a kind of device for integrating touch-control and pressure-sensing, it is characterised in that include：
One touch control electrode layer, comprising several the first touch control electrodes set in the first direction with it is several set in a second direction the
Two touch control electrodes, wherein, the first direction is vertical with the second direction；
One protective layer, is arranged at the side of the touch control electrode layer；
One pressure electrode layer, includes at least one pressure-sensing electrode；
One elastomeric dielectric material layer, between the touch control electrode layer and pressure electrode layer；And
One electric capacity detecting module, when touch detection is operated, sequentially or at random by a touch-control transmission signal puts on several selected
The second touch control electrode, and sequentially or random input a touch-control sensing signals from several the first selected touch control electrodes；
When pressure detection is operated, a pressure capacitance excitation induced signal is put at least one described pressure by the electric capacity detecting module
Sensing electrode simultaneously inputs a pressure sensitive signal from the pressure-sensing electrode.
2. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the protective layer is a glass
The coating layer of substrate, the film substrate of a high polymer material or a hard.
3. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the electric capacity detecting module exists
Sequentially or at random pumping signal is answered to put at least one selected first touch control electrode by a pair again when pressure detection is operated
And/or at least one selected second touch control electrode.
4. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the electric capacity detecting module exists
A reference potential is put on into the pressure-sensing electrode of at least one again when touch detection is operated.
5. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the electric capacity detecting module bag
Containing a mutual capacitance circuit for detecting and a self-capacitance circuit for detecting, touch point is detected with mutual capacitance circuit for detecting in touch control operation
Position, the self-capacitance for detecting pressure electrode when pressure detection is operated with self-capacitance circuit for detecting changes.
6. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the elastomeric dielectric material layer
Comprising an elastic colloidal material, volume compression is deformed when the elastic colloidal material meets pressure, and recovers former when removing pressure
Some volume and shape.
7. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the electric capacity detecting module exists
Pressure detection also puts on the same-phase signal of pressure capacitance excitation induced signal described in one described several non-selected when operating
The first touch control electrode and/or several non-selected second touch control electrodes.
8. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that the pressure capacitance sensing swashs
It is an alternating signal to encourage signal.
9. integrate the device of touch-control and pressure-sensing as claimed in claim 3, it is characterised in that the correspondence pumping signal is
One DC reference signal or one with the pressure capacitance excitation induced signal inversion position alternating signal.
10. the device of touch-control and pressure-sensing is integrated as claimed in claim 9, it is characterised in that the DC reference signal
It is a zero potential signal.
11. the device of touch-control and pressure-sensing is integrated as claimed in claim 1, it is characterised in that comprising a substrate, be arranged at
The elastomeric dielectric material layer is back to the side of the protective layer, and the substrate is a glass substrate or a high polymer material base
Plate.
12. the device of touch-control and pressure-sensing is integrated as claimed in claim 11, it is characterised in that the substrate is a display
The colored optical filtering substrates of screen, the pressure electrode layer is the electrostatic shielding protective layer of display screen.
13. a kind of method for integrating touch-control sensing and pressure-sensing, it is characterised in that include：
A device for integrating touch-control and pressure-sensing is provided, the device of the integration touch-control and pressure-sensing is included：
One touch control electrode layer, comprising several the first touch control electrodes set in the first direction with it is several set in a second direction the
Two touch control electrodes, wherein, first direction is vertical with second direction；
One protective layer, is arranged at the side of the touch control electrode layer；
One pressure electrode layer, includes at least one pressure-sensing electrode；
One elastomeric dielectric material layer, between the touch control electrode layer and pressure electrode layer；
One electric capacity detecting module；
One touch detection sequential, sequentially or at random puts on a touch-control transmission signal the selected second touch control electrode, and
It is sequentially or random from selected first touch control electrode, one touch-control sensing signal of input, make touch detection operation, it is in touch-control
A reference potential is also put on into the pressure-sensing electrode of at least one during detecting operation；And
One pressure detection sequential, in the pressure detection sequential by a pressure capacitance excitation induced signal put on it is described at least
One pressure-sensing electrode, and make pressure detection from the pressure-sensing electrode one pressure sensitive signal of input.
14. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 13, it is characterised in that in the touch-control
Judge whether to detect touching at the end of sequence, if detecting touching, into pressure detection sequential.
15. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 13, it is characterised in that in the touch-control
Judge whether to detect touching during sequence, if detecting touching, a touch mark is set and the coordinate of the touch points is recorded, if
Touching is not detected then removes or reset the touch mark.
16. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 15, it is characterised in that according to touch mark
Setting decide whether to perform the pressure detection sequential.
17. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 13, it is characterised in that the pressure capacitance
Excitation induced signal is an alternating signal.
18. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 17, it is characterised in that detectd in the touch-control
A reference potential is put on at least one described pressure-sensing electrode again when surveying sequential.
19. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 17, it is characterised in that detectd in the pressure
Pumping signal is answered to put at least one the first selected touch control electrode and/or at least one selected second by a pair again when surveying sequential
Touch control electrode.
20. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 19, it is characterised in that the correspondence excitation
Signal is the inversion signal of a DC reference voltage or the pressure capacitance excitation induced signal.
21. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 20, it is characterised in that the DC reference
Voltage is the ground signalling of a zero potential.
22. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 19, it is characterised in that detectd in the pressure
The same-phase signal of the pressure capacitance excitation induced signal also is put on into described several non-selected first when surveying sequential to touch
Control electrode and several non-selected second touch control electrodes.
23. the method for touch-control sensing and pressure-sensing is integrated as claimed in claim 13, it is characterised in that the electric capacity detecting
Module includes an at least self-capacitance circuit for detecting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105110673A TWI584185B (en) | 2016-04-01 | 2016-04-01 | Integral sensing apparatus for touch and force sensing and method for the same |
| TW105110673 | 2016-04-01 |
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| Publication Number | Publication Date |
|---|---|
| CN107272939A true CN107272939A (en) | 2017-10-20 |
| CN107272939B CN107272939B (en) | 2020-04-10 |
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| CN201710202787.3A Active CN107272939B (en) | 2016-04-01 | 2017-03-30 | Device and method for integrating touch control and pressure sensing |
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| Country | Link |
|---|---|
| US (1) | US10209805B2 (en) |
| CN (1) | CN107272939B (en) |
| TW (1) | TWI584185B (en) |
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- 2017-03-28 US US15/470,907 patent/US10209805B2/en active Active
- 2017-03-30 CN CN201710202787.3A patent/CN107272939B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109814762A (en) * | 2017-11-22 | 2019-05-28 | 矽统科技股份有限公司 | Touch detection circuit and method |
| CN109814762B (en) * | 2017-11-22 | 2022-05-03 | 矽统科技股份有限公司 | Touch detection circuit and method |
| US11662634B2 (en) | 2020-01-21 | 2023-05-30 | Ordos Yuansheng Optoelectronics Co., Ltd. | Touch display device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170285832A1 (en) | 2017-10-05 |
| TW201737046A (en) | 2017-10-16 |
| US10209805B2 (en) | 2019-02-19 |
| CN107272939B (en) | 2020-04-10 |
| TWI584185B (en) | 2017-05-21 |
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